1. The last, conclusive version of a document, software, book, or other work after all revisions and corrections have been completed
The publisher released the final version of the novel after months of editing.
A editora lançou a versão definitiva do romance após meses de edição.
2. An authoritative or definitive edition that is considered the standard reference
This is the definitive version of the software with all bugs fixed.
Esta é a versão definitiva do software com todos os erros corrigidos.